Spec-Check® (patent pending), developed by and available exclusively from Presby Environmental, is a portable, hand-operated device used for sorting/grading a sample of aggregate, sand or other particulate material in order to determine whether a sample meets a specification for an intended use.

Unlike a lab analysis, the Spec-Check® does not need the sample to be oven-dried to remove all its moisture content. The device is small and easy to operate, making onsite examination of materials a quick and cost-effective alternative to expensive and time-consuming sieve analyses by a laboratory.

A Spec-Check® analysis gives a “go / no-go” indication in order to assist the user in determining whether the material can be used for a particular purpose, if a full sieve analysis is required, or if an alternative supply of aggregate is needed.
             Click here to order a Spec-Check®

  • Device used to evaluate material’s gradation
  • Multiple concentric screens in canister
  • Evaluate gradation after shake
  • Less than 10 minute cycle
  • Inexpensive


20140828_SpecCheck_10_01Spec-Check® consists of an integrated system of screens of various sizes contained inside a transparent container.  A sand sample is applied along with a small amount of water; after the device is agitated for a few minutes, the sample will be sorted based on the particle sizes of its content. Spec-Check® enables the user to evaluate the sand quickly, onsite and before construction proceeds in order to determine whether the supplied material meets specs.

Spec-Check® Tutorial

Please click on the following link for the current Spec-Check® user manual. Please check back soon for updates to the manual.

Spec-Check® Manual (March 2012 PDF)

To order your Spec-Check® today, please fill out the form below and either fax it to 603-837-9864 or mail it to the address listed at the top of the form.

Spec-Check® Order Form (PDF)